What appearance characteristics define bagworms?

The defining characteristic of bagworms is their tough protective bags made of silk, which they construct as a form of camouflage and protection from predators. These bags are often decorated with bits of plant material such as leaves and twigs, enabling the larvae to blend seamlessly into their environment. This adaptation not only shields them from potential threats but also allows them to remain relatively unnoticed while they feed on foliage.

The other characteristics mentioned do not accurately describe bagworms. They are not known for being brightly colored; rather, they often appear dull or camouflaged. Additionally, their exterior is not soft and fuzzy; instead, it is hard and protective due to the silk structure. While bagworms do possess legs and antennae, these features are not distinctive traits when it comes to identifying them, as many insects share the characteristics of multiple legs and antennae.